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Dyfyniad Arddull ChicagoHacon, Richard J. Personal and Organizational Effectiveness. London: McGraw-Hill, 1972.
Dyfyniad MLAHacon, Richard J. Personal and Organizational Effectiveness. McGraw-Hill, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.